A perfect circle

That was long ago ... In kindergarten. The teacher made us cut circles (not shown simply from a piece of paper), all turned out (probably), and I do not have anything came out - oval, square, triangle, but not the circle. It angered me terribly, but most of all angry that she makes me do it for a long time and have all started to laugh at me.
I, apparently, was not evil, but the memory and resentment were strong, because a few days later I told her all the same great carved a perfect circle ... of her own black peas in a large white skirt. As I remember, she is sitting on a chair, and her long, light skirt a little behind on the floor is, so I decided to cut this large peas)) Oh, and nefart was then my mother blush and pay skirt educator.